1LQS:
reference: Crystal structure of human cytomegalovirus IL-10 bound to soluble human IL-10R1., Jones BC, Logsdon NJ, Josephson K, Cook J, Barry PA, Walter MR, Proc Natl Acad Sci U S A 2002 Jul 9;99(14):9404-9. PMID: 12093920

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).